Determining the probability of the faults and fractures in one of the oil reservoirs based on the seismic indicators of the steering cube

Identifying faults and fractures in hydrocarbon reservoirs is of particular importance in the stages of enhanced recovering and development of oil fields. The correct description and drawing of faults and fractures can enable the implementation of development projects in the oil industry. One of the methods of describing the discontinuity in the layers is the use of seismic indicators. In this study, the algorithm developed by Hardap [1] was used along with the application of the latest methods of seismic markers in one of Iran's oil fields to evaluate its ability to identify faults and fractures. The results of this study for the reservoirs revealed that the thinned fault likelihood as well as fault likelihood show good consistency regarding to the quality and accuracy of discontinuities in the field. In this regard, the use of information on the slope and azimuth of layers plays an important role in increasing the accuracy of interpretation of discontinuities, especially fractures. Finally, the evaluation of these indicators shows that the main extension of the faults and fractures in the studied reservoir is in the north-south and northwest-southeast direction, which is consistent with the data of pictorial diagrams (Rose diagram) corresponds to the wells drilled in this field. Based on the distribution of the density of fractures at the location of the drilled wells, it can be concluded that in addition to the diagenesis phenomena, the fracture networks and their connection with each other can control the production of field wells.